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单项选择题

What is the main difference between an electronic book and a LCD screen

A．The power they need.
B．The portability they come to.
C．The convenience they make.
D．The content they store.
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热门试题

单项选择题What is the premise behind a project of the Massachusetts Institute of Technology

A．Electronic ink.
B．Electronic book.
C．Laptop.
D．LCD screen.

单项选择题What is America's favourite game

A．Baseball.
B．Basketball.
C．Professional football.
D．Soccer.